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A struck tuning fork rings clearly. Then fingers gently touch the prongs and the sound stops instantly.

C2-3-17 Event Transition · source_radiation principle: Resonance Damping (Mechanics)
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Per-prompt rubric

Basic standards

Visual presence

  • a tuning fork
  • fingers

Event: fingers touch the prongs of a struck tuning fork

Audio presence

  • a tuning fork

Sound: a tuning fork ring

Key standards

Visual physical commonsense (V-PC)

  • A canonical U-tine tuning fork is struck and rings clearly during the clip.
  • Fingers visibly touch the prongs of the vibrating tuning fork.

Audio physical commonsense (A-PC)

  • A clear ring at a stable fundamental pitch is audible from the fork.
  • The ring decays to silence almost instantly once the fingers contact the prongs, with no residual tone.

Cross-modal physical commonsense (AV-PC)

  • The ring onset in the audio aligns in time with the visible strike of the tuning fork.
  • The abrupt end of the ring coincides in time with the visible moment the fingers contact the prongs.